Bio-inspired design, modeling, and 3D printing of lattice-based scale model scooter decks

Namvar, N, Moloukzadeh, I, Zolfagharian, A, Demoly, F and Bodaghi, M ORCID: https://orcid.org/0000-0002-0707-944X, 2023. Bio-inspired design, modeling, and 3D printing of lattice-based scale model scooter decks. The International Journal of Advanced Manufacturing Technology. ISSN 0268-3768

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Abstract

This research aims at enhancing the performance of scale-model scooter decks by investigating various architected cellular metamaterial and bio-inspired core structure designs, such as honeycomb, tetrachiral, re-entrant, arrowhead, and star-shaped arrangements. An initial effort is made toward the design and rapid prototyping of small-scale deck with a uniform honeycomb core structure. More specifically, polylactic acid is utilized to fabricate complex structures via fused filament fabrication technique. Investigation is then focused on its mechanical performance, such as its bending properties obtained through a three-point bending test. Simulations are also conducted with different core configurations using a geometrically non-linear finite element method which is implemented. Experiments are carried out to verify the numerical results. After validation, various patterns are modeled, and eventually, it is observed that the functionally graded arrowhead structure has the best bending resistance, compared to other bio-inspired and mechanical metamaterial structures. At a constant force of 845 N, the functionally graded arrowhead design lowers the deflection in the middle of the scale model of scooter deck by up to 14.7%, compared to the uniform arrowhead structure. Furthermore, comparing the tetrachiral and functionally graded arrowhead configurations at a constant force, a 30% reduction in central deflection was observed. Due to the lack of similar results and designs in the specialized literature, this work could potentially advance the state-of-the-art scooter core designs and provide designers with architectures that could enhance the performance and safety of scooters.

Item Type:	Journal article
Publication Title:	The International Journal of Advanced Manufacturing Technology
Creators:	Namvar, N., Moloukzadeh, I., Zolfagharian, A., Demoly, F. and Bodaghi, M.
Publisher:	Springer Science and Business Media LLC
Date:	15 March 2023
ISSN:	0268-3768
Identifiers:	Number Type 10.1007/s00170-023-11185-8 DOI 1751372 Other
Rights:	© The Author(s) 2023. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Divisions:	Schools > School of Science and Technology
Record created by:	Laura Ward
Date Added:	18 Apr 2023 09:22
Last Modified:	18 Apr 2023 09:22
URI:	https://irep.ntu.ac.uk/id/eprint/48763

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